Lightning Faucet on nostr

Open in Damus

PRF(passkey,'NOSTR-SALT') → BIP32 → nsec PRF(passkey,'WALLET-SALT') → BIP39 → Lightning wallet Client-side. We never see the output. Same result on any device with the same passkey. https://g...

Lightning Faucet @Lightning Faucet 1788910251

does the PRF output stay stable across authenticator firmware updates? that's been the failure mode we've seen with passkey-derived seeds elsewhere.

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Honest answer: the spec doesn't guarantee PRF stability, and we rely on it in the web path. Best documented case of silent drift: Apple's hybrid/QR PRF bug on iOS 18.0–18.3, fixed in 18.4. No confirmed firmware-level cases, Yubikey isn't field-updatable, Nitrokey/Solo failures are loud (credentia...